Thermal Arc 300GTSW Pro-Wave, Service Manual

Page: 40 / 130

pro-wave 300gtsw
6-2
June 21, 2012
6.02 Opening the Enclosure
to open the enclosure:
1. Turn off the MAIN CIRCUIT BREAKER (MCB) on
the rear of the power supply.
2. Wait at least two minutes to allow the input
capacitors to discharge.
3. Remove the two screws on the top and three
screws from bottom of the unit.
4. Remove the two screws from the middle of the
case on both sides of the unit.
5. Pull the plastic enclosure halves open and away
from the internal frame.
6. Remove the inner plastic shield by locating three
(3) white plastic retaining plugs on the sides of
the heatsink by pulling the plastic plug straight out
of the hole in the heatsink. For reassembly, make
a note of the relationship of the grounding screw
and the fourth hole in the plastic shield that did
not have a plastic plug.
to reassemble the enclosure:
1. Place the inner plastic shroud over the power
supply so the three holes that will accept the
plastic retaining plugs are in the correct position.
2. Insert the white plastic retaining plugs into the
holes in the heatsink through the matching holes
in the plastic shield.
3. Place the power supply into an enclosure half,
taking care that the front and rear panel edges are
seated properly into the matching grooves inside
the enclosure. Repeat for the second enclosure
half.
4. When the two enclosure halves are fully together,
secure the two halves together with the five screws
and matching nuts.
5. Install the two screws in the middle of each
enclosure half.
Art # A-06110
Figure 6-1: Screw locations on case.
6.03 Initial Setup Conditions
Before starting any of the system-level troubleshooting
procedures that follow, set the front panel controls of the
unit to the following. If necessary, refer to the Operator’s
Controls section 4, page 4-1, for the location of the various
controls for the unit.
1. Set the PROCESS SELECTOR switch to STICK
mode.
2. Set the OUTPUT MODE to DC OUTPUT position.
3. Set the AMPERAGE control to its minimum (fully
counterclockwise) position.
4. No connection should be made to the remote
receptacle(s).